Wystepowanie bakterii z rodzaju Yersinia w wodach powierzchniowych

Przebadano 42 próbki wód powierzchniowych należących do różnych klas czystości. Pałeczki Yersinia wykryto w 15 zbiornikach wodnych. Wśród 27 wyizolowanych szczepów dominował gatunek Y. intermedia oraz Y. enterocolitica.

The aim of the study was determination of the frequency of occurence of Yersinia genus bacteria in surface waters polluted to various degrees with bacteria of the coliforme and of fecal coli. For detection of Yersinia rods the previously elaborated medium Endo MLCe and the membrane filter method were applied. Samples of 42 surface waters were examined, including 26 from rivers and 16 from lakes, ponds and clay-pits. On the basis of sanitary bacteriological analysis 16 surface waters were classified to class I purity, 10 to class II, the remaining ones to class III or beyond classification. Yersinia rods were detected in 15 water bodies that is 35.7% of the examined waters. A total of 27 Yersinia strains were identified with dominance of Y. intermedia (14 strains) and Y. enterocolitica (10 strains). Three strains represented by the species Yersinia frederiksenii. Most of the Y. enterocolitica strains belonged to biotype 1, the particukular strains being represented by various serotypes. Hence their different origin may be concluded. The pathogenic serotypes 0:3 and 0:9 of Yersinia enterocolitica were not detected.